![[WWWBanner.jpg]] # janvanderwijk.TECH ## ABOUT ME --- [![Github](Githublogo.png)](https://bit.ly/jvdw_GIT) [![Instagram](Instagramlogo.png)](https://bit.ly/jvdw_IG) [![LinkedIN](Linkedinlogo.png)](https://bit.ly/jvdw_IN) [![Youtube](Youtubelogo.png)](https://bit.ly/jvdw_YT) --- Hello, and welcome to my personal website. My name is **Jan van der Wijk**, and I am an experienced IT professional with a strong background in **systems administration, networking, cybersecurity, and automation**. Over the years, I have worked extensively with **Windows and Linux environments**, designed and optimized **network infrastructures**, and implemented **scalable IT solutions** for businesses. With a deep passion for **automation and process optimization**, I specialize in streamlining workflows through scripting and advanced system configurations. My expertise extends to areas such as: - **System and Network Administration** (Windows Server, Linux, pfSense, OPNsense) - **Cloud & Virtualization** (Proxmox, VMware, Hyper-V, Docker, Kubernetes) - **Security & Infrastructure** (Firewalls, VPNs, Identity & Access Management) - **Automation & Scripting** (PowerShell, Bash, Python for IT operations) ## How to Use My Knowledge Base On the left (or the hamburgermenu ( ![[Hamburger_icon.svg 3.png]] ) on smaller screens, top left) , you will find my personal **knowledge base**, where I document my technical findings, troubleshooting steps, and best practices. This collection serves as both a reference for myself and a resource for others looking to gain insights into advanced IT topics. Feel free to explore, and if you have any questions or insights, don’t hesitate to reach out. This KnowledgeBase is now mainly in Dutch, i will add an English Translation to it 😉 Let me know if you want any errors or adjustments, such as emphasizing specific technologies or adding a more personal touch! 🚀 --- ## BLOG - **April 4, 2025, NEW TOOL: Network Inventory** *I have developed my own tool in Python to automatically scan a specified IPv4 subnet. The application detects active hosts and gathers essential data such as IP addresses, hostnames, and MAC addresses (including manufacturer information). All data is stored in an SQLite database, providing both real-time and historical insights. Featuring a user-friendly Tkinter GUI, periodic scans, CSV export, and the ability to integrate notifications and custom commands, this tool offers IT administrators a comprehensive solution. Open source on GitHub.: * https://github.com/janvanderwijktech/NetworkInventory/tree/master - **March 6, 2025, NEW TOOL: WinAddPrintQueue** *I just created a simple but to me VERY useful tool, to make adding windowsprintqueues just a tad easier. Want to check it out and **download**?, see here:* *https://publish.obsidian.md/janvanderwijktech/9+KB/ICT/JWTOOLS/WinAddPrintQueue* - **March 6, 2025, Three GREAT new KnowledgeBase Articles** *I'm excited to announce three valuable new additions to the knowledgebase on janvanderwijk.tech, aimed at empowering IT professionals and enthusiasts alike with practical insights and deeper understanding.* ### *Master CURL with Extensive Examples* *In my first article, I've compiled an extensive collection of practical CURL examples. CURL is an incredibly powerful tool for transferring data with URLs, widely used for troubleshooting, automation, and interacting with APIs. Whether you're a beginner or seasoned expert, these examples will significantly enhance your productivity and expand your command-line capabilities. [Explore CURL Examples](https://publish.obsidian.md/janvanderwijktech/9+KB/ICT/UX+IX/CURL)* ### *LDAP Queries Simplified* *Our second addition demystifies LDAP queries within Active Directory. Understanding LDAP queries is crucial for efficient management of user accounts, groups, and organizational units. This article offers clear explanations and straightforward examples that will help you execute precise, effective LDAP searches quickly. [Dive into LDAP Queries](https://publish.obsidian.md/janvanderwijktech/9+KB/ICT/MICROSOFT/ACTIVEDIRECTORY/LDAP+Queries)* ### *Understanding the SVCHOST Process* *Lastly, I've published an in-depth explanation of the SVCHOST process on Windows. Many IT professionals often wonder about the purpose and importance of SVCHOST. This article breaks down its role, clarifies common misconceptions, and explains how it impacts system performance and stability. [Learn about SVCHOST](https://publish.obsidian.md/janvanderwijktech/9+KB/ICT/MICROSOFT/WINDOWS/What+is+the+SVCHOST+process)* *Feel free to explore these articles, share your feedback, and suggest future topics you'd like covered.* *Happy learning!* - **Februari 17, 2025, Introduction Video on [Youtube](https://youtu.be/g7fQLVTHzTI?si=XE8zlVrJvy6XNnOL)** - **Februari 17, 2025**. **Mastering sudo: A Deep Dive into the /etc/sudoers File in Linux** *When managing a Linux system, fine-tuning user privileges is crucial for security and efficiency. The `/etc/sudoers` file is at the heart of this, defining who can execute commands with elevated privileges. However, improper modifications can lock you out of administrative access, making it essential to understand its structure and best practices.* *In this post, we’ll explore how sudo works, how to safely edit the `/etc/sudoers` file, and how to leverage the `/etc/sudoers.d/` directory for modular management. Whether you're a Linux beginner or an experienced sysadmin, mastering sudo ensures a secure and well-configured system. Let’s dive in! 🚀* Find it here --> [Understanding the sudoers File in Linux](https://publish.obsidian.md/janvanderwijktech/9+KB/ICT/UX+IX/SUDO+in+debian+ubuntu) --- ## LINKS [GitHub] (https://bit.ly/jvdw_GIT) [Instagram] (https://bit.ly/jvdw_IG) [LinkedIN] (https://bit.ly/jvdw_IN) [Youtube] (https://bit.ly/jvdw_YT)